Sex drive can also fall if a woman's natural testosterone levels drop. Testosterone is produced in the ovaries and adrenal glands, so levels can drop if these are removed or they're not functioning properly.

Psychosexual therapy can help a woman overcome orgasm problems. It involves exploring her feelings about sex, herself and her relationship

Orgasm problems

These can be divided into two types:

primary – when a woman has never had an orgasm

secondary – when a woman has had an orgasm in the past, but can't now

Some women don't need to have an orgasm to enjoy sex, but an inability to reach orgasm can be a problem for some women and their partners.

Reasons why a woman can't have an orgasm can include:

fear or lack of knowledge about sex

being unable to "let go"

not enough effective stimulation

relationship problems

mood disorders – such as depression

previous traumatic sexual experience

Research is being done into certain medical conditions that affect the blood and nerve supply to the clitoris to see whether this affects orgasm.

Pain during sex

Vaginismus

Pain during sex – also called dyspareunia – can be a result of vaginismus.

Vaginismus is when muscles in or around the vagina go into spasm, making sexual intercourse painful or impossible. It can be very upsetting and distressing.

It can occur if the woman associates sex with pain or being "wrong", or if she's had vaginal trauma, such as childbirth or an episiotomy.

It can also stem from relationship problems, fear of pregnancy, or painful conditions of the vagina and the surrounding area.

It can be treated by focusing on sex education, counselling and using vaginal trainers, also known as vaginal dilators.

Vaginal trainers are cylindrical shapes that are inserted into the vagina. A woman will gradually use larger sizes until the largest size can be inserted comfortably. Some women may wish to try using their fingers instead.

Sex after menopause

Pain during sex is common after the menopause as oestrogen levels fall and the vagina feels dry.

This can affect a woman's desire for sex, but there are lubrication creams that can help. Ask your GP or pharmacist.

Treating other conditions, such as diabetes or depression, might also alleviate symptoms of sexual dysfunction.

Sex therapy

Sexual therapy can help. Talk with your partner about your problem, and see a therapist together if you can. Don't be embarrassed. Many people experience sexual dysfunction and there are ways to get help.